package nickname

import (
	"strings"
	"testing"
	"unicode/utf8"
)

func TestWordBankSize(t *testing.T) {
	if len(imageryWords) != 100 {
		t.Fatalf("imagery want 100 got %d", len(imageryWords))
	}
	if len(sceneWords) != 100 {
		t.Fatalf("scene want 100 got %d", len(sceneWords))
	}
}

func TestRandomFormat(t *testing.T) {
	seen := map[string]bool{}
	for i := 0; i < 50; i++ {
		n := Random()
		if utf8.RuneCountInString(n) < 2 {
			t.Fatalf("too short: %q", n)
		}
		seen[n] = true
		ok := false
		for _, im := range imageryWords {
			for _, sc := range sceneWords {
				if n == im+sc {
					ok = true
					break
				}
			}
			if ok {
				break
			}
		}
		if !ok {
			t.Fatalf("not from bank: %q", n)
		}
	}
	if len(seen) < 5 {
		t.Fatalf("expected some variety, got %d unique", len(seen))
	}
}

func TestNormalize(t *testing.T) {
	if got := Normalize("  心语岛  "); got != "心语岛" {
		t.Fatalf("got %q", got)
	}
	long := strings.Repeat("啊", 20)
	if utf8.RuneCountInString(Normalize(long)) != 16 {
		t.Fatalf("clamp failed")
	}
}